Spring mvc 如何根据已有的图片 合并成一个新的图片

...如何把前台图片传到后台应该会吧 不会百度下 demo很多
至于 图片合成也很简单
import java.io.File;
import
java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
public class test
{
public static void main(String args[])
{
try
{
//读取第一张图片
File fileOne = new
File("D:\\M114317.png");
BufferedImage ImageOne =
ImageIO.read(fileOne);
int width = ImageOne.getWidth();//图片宽度

int height = ImageOne.getHeight();//图片高度
//从图片中读取RGB
int[]
ImageArrayOne = new int[width*height];
ImageArrayOne =
ImageOne.getRGB(0,0,width,height,ImageArrayOne,0,width);

//对第二张图片做相同的处理
File fileTwo = new File("D:\\M114320.png");

BufferedImage ImageTwo = ImageIO.read(fileTwo);
int[] ImageArrayTwo
= new int[width*height];
ImageArrayTwo =
ImageTwo.getRGB(0,0,width,height,ImageArrayTwo,0,width);

//生成新图片
BufferedImage ImageNew = new
BufferedImage(width*2,height,BufferedImage.TYPE_INT_RGB);

ImageNew.setRGB(0,0,width,height,ImageArrayOne,0,width);//设置左半部分的RGB

ImageNew.setRGB(width,0,width,height,ImageArrayTwo,0,width);//设置右半部分的RGB

File outFile = new File("d:\\out.png");
ImageIO.write(ImageNew, "png",
outFile);//写图片
}
catch(Exception e)
{

e.printStackTrace();
}
}

看 BufferedImage API